A group of go-getter California high school students have found a way to power homes and business using swimming pools.

The solution uses thermoelectric panels that can harness the temperature difference between a hot surface and the cold water. On a smaller scale this technology could power smaller household devices, but Innovation News Daily suggests that larger floating farms of the devices could provide solutions for coastal towns and cities across the country.

The floating device features reflector panels that focus sunlight on a black surface, which then converts the solar energy to heat. That heat is then passed through thermoelectric panels before being passively dissipated into the surrounding water.

The group is hoping to have a finished product ready to show at the MIT EurekaFest in June. Stay tuned!